はじめに
Replace the LED driver board to fix a non-functioning display backlight.
パーツ
パーツは必要ありません。
-
-
Stick a suction cup near each of the two top corners of the glass panel.
-
If your suction cups refuse to stick, try cleaning both the glass panel and the suction cup with a mild solvent.
-
-
-
Gently lift the glass panel perpendicular to the face of the LCD enough to clear the steel mounting pins attached along the underside of the top edge of the glass panel.
-
Pull the glass panel away from the lower edge of the iMac and carefully set it aside.
What's the best product to clean the face of the LCD?
Microfiber Cloth
-
-
-
Remove the eight 8 mm T10 Torx screws securing the display to the outer case.
Replacing the screws , especially the two uppermost ones , is awkward due to the magnets attracting the screws off the Torx driver
I’ve just replaced the screws by making a little tube from paper and wrapping it round each screw to keep it contained. A cut-down straw would be perfect for job.
-
-
-
Slightly lift the top edge of the display out of the outer case.
After sliding the display slightly towards the top edge, enough for the bottom edge to clear the retainers, an alternative is to raise the bottom edge out. Then unplug the LED backlight power cable (this step + 2), unplug the LCD thermal sensor cable (this step + 4), unplug the display data cable (this step + 3), and the display may be rotated over the top edge while leaving the vertical sync cable attached (this step + 1).
-
-
-
Pull the vertical sync cable connector out of its socket on the LED driver board near the top left corner of your iMac.
Do not try to pull the plug off the circuit board as it's soldered. Pull the cable sideways out of the socket.
Skipped step 5-10. I used two 5-6" chopsticks to prop up the display, this gave me more than enough room to complete the rest of the steps. I only had to disconnect the 3 cables are directly connected to the hard drive. Replacing the Seagate hard drive with another Seagate hard drive eliminated any cable issues. Now I have 2TB SSDH
I was also able to skip steps 5 thru 10, which meant no messing with any cables except for the two for the HD (steps 13+14). Used a credit card to start the removal of glass panel (step 2) - much easier than I imagined. After removing display screws (step 3) I simply had a friend hold up the display's bottom edge as far as the cables would allow (careful not to stress at connection to logic board) and this provided enough room to remove the HD bracket screws (step 11), detach the HD cables, and remove the HD. Was replacing a failed 1TB Seagate with a 3TB Seagate so no problems with compatibility when reattaching the HD cables and everything worked fine when I restored the OS and data to the new HD. No fan issues. I did take great care to not get fingerprints on the inside of the glass panel and to blow off any dust specks before reinstalling it. It was a bit tricky to get the new HD back in without letting the magnets get a hold of it, so thanks for the warning posted here about that!
On my mid 2010 Imac I found it was not necessary to disconnect any cables (except of course those attached to the drive). Simply angle the monitor away from the case to a safe distance without stressing any cables and secure with tape. With a stubby screw driver it was easy to access and remove the drive.
-
-
-
Pull the display data cable straight out of its socket on the logic board.
This cable is very short, I would remove it before any of the others. First time I did this, I didn't realize this and this cable just popped out of it's socket. Luckily, the board wasn't damaged.
maccentric - 返信
i damaged my (step7) cable, and my iMac screen won't work, how to fix this?
I did the same thing. The pins are VERY easy to bend. I replaced it with a new cable from this company.
http://www.macpalace.com/922-9497-cable-...
Waiting for it to arrive.
Michael -
I wish this step was listed as a warning before lifting the monitor and as the first cable to undo. I broke it as it popped up and out, had to trash my Mac and I am stuck with a new hard drive.
Frank1701a - 返信
I followed the directions to a T and everything worked going back together. That cable in step 7 is delicate so one must be very careful.
Same problem for me. I damaged this cable and am ordering one now.
This is a tough step so I would also suggest removing this cable first.
lyleberman - 返信
Yes, damaged mine too. It is better to take it out of the LCD and install it carefully on the logic board, then install it to the LCD.
asle -
Ok finally got the cable and was able to successfully finish the project.
That video cable is ROUGH to install.
lyleberman - 返信
The same thing happened for me. That cable was by far the shortest and a slight pull of the display up caused the connector to come free. Luckily it wasn't damaged by this. It was pretty unclear to me how that connector fit in as well. It slides in and out parallel to the surface of the mother board, up towards the top of the iMac to unplug and down towards the bottom to plug in. I agree, if I were to do this repair again that is the first interior cable I would disconnect. Maybe a closeup of the cable plugged in and unplugged to show exactly how it engages and disengages would be good as well.
It is fine to remove the cable from the logic board when when you remove the screen. But when when assembling back together I found it better to take the LVDS cable out of the LCD and install it carefully on the logic board. Then connect it to the top of the LCD. Also the connector to the LCD is much more solid and not so easy to bend.
This is by far the best way round to do this as trying to refit the cable to the logic board is a complete nightmare.
Russ -
I agree with asle, manipulating the display end of the cable would be easier - at least it cannot be any harder then manipulating the motherboard end.
Jerry -
well I did all t these steps and now the iMac won't turn on at all. I guess the big cable is not connected to the board as it used to... Mac is out of warranty so it's going out the door. RIP
this part is not complicated if you understand at first how the lock works.. remove the lock is easy, reassemble the cable and connect it is very problematic because the space to work is very tiny, but if you are carefully, it should be not a problem . try to see some videos from youtube first!
This totally blows.. If you want to do this correctly and not destroy your computer over this step, - OWC’s video will show you EXACTLy what to do with the display cable ..
Don’t raise the display more than 3-4 inches. Pull the tape off the back of the display and unhook the cable from the display, instead of trying to remove it from the motherboard. As soon as I raised the display, the cable snapped loose. Ordered a new cable from Amazon. Am waiting to see if works ok.
-
-
-
Disconnect the LCD thermal sensor cable connector from its socket on the logic board.
Be very careful - this connector very difficult to disconnect, and you have a high risk of pulling the cable pins out of the connect. If you have disconnected the 3 other cables, you can have a helper rotate the screen out of the way while you remove the hard drive.
Brian Tsai - 返信
I found this connector impossible to remove
I also found this extremely difficult to remove. Tiny cable with a death grip. I tried using two spudgers, my fingernails, and walking it out. In the end, I used two spudgers and pried it up, using leverage from the clip to the right.
Also, i recommend setting the iMac upright for this. I rested the screen on my chest while I dual wielded my spudgers.
eer ist zerbrochen! hoffe krieg ihn dann trotzdem wieder rein
This was connector was impossible to remove. Like a previous commenter, I did this with the machine upright and with the LCD Panel resting on my upper chest. Ultimately, the pins pulled out of the socket! Once they were out, it was relatively easy to remove the socket. I completed the drive replacement, (installed a 1 TB SSD) and then replaced the pins in the socket and reassembled the machine. One mental error I made was I couldn’t remember the correct orientation for the Black and White wires in the socket. In looking at the photos here on iFixIt, it looks like I reversed their orientation. However, the machine seems to be running fine. I installed macos High Sierra and migrated my data from my old HD and the machine has been running for two days now. I would hate to have to go back in and remove the socket and reverse the wire orientation. Anyone have advise on this?
In followup to my previous post, I launched TechTool Pro 9.6.1 and ran the Sensors Test. All Sensors tests were passed. These included:
LCD Proximity, LCD Thermal Compensation 2, LCD Proximity, Thermal Compensation. Machine seems to be running fine.
jmaher -
-
-
-
Remove the two 9 mm T10 Torx screws securing the LED driver board to the outer case.
-
To reassemble your device, follow these instructions in reverse order.
To reassemble your device, follow these instructions in reverse order.
3 の人々がこのガイドを完成させました。
imac 2544 2.5 core i5 i touched the motherboard to supply and it spark now it is not powering
please tell me the directions
thanks witting for answering .
tahir - 返信
Im sorry to say, If it sparked when you touched it your motherboard s now fried. You need a new one.
Robert Wacker -
Very easy to lift the glass out. Don't jerk too hard.
kctipton - 返信
Success replacing the stock ST31000528AS with a STBD3000100 (Dead 1TB to new 3TB, both Seagate). First try. Using another Mac and a quality Firewire 800 cable, I formatted it using Target Disk mode, 2 partitions (defaults, except I made the first one bigger than the second). To the second, smaller one, I copied a bootable Install OS X Mavericks partition. Tried to boot. It booted, and I installed; nary a glitch. (Running the Installer over Firewire would have been faster, but I didn't want to reboot this machine.)
See part 2 below...
Matthew Elvey - 返信
(Part 2:)
I SKIPPED steps 6, 7 AND 8! Instead, after doing Step 5, I noticed I then had enough room and cable length to access the screws in Step 11 if I lifted the LCD up an inch or so, rotated it about 20-30 degrees clockwise and moved it a couple inches toward the base, and put it down. After removing them (Step 11), I propped up the LCD (with a spare spudger) and had enough room to do Steps 12, 13, and 14 without much difficulty. Felt safer/less work and risk than not skipping steps 6-8. No risk of the damage Ersan and Michael caused performing Step 7!
Matthew Elvey -
I just edited that step to add a note about the shortcut.
Matthew Elvey -
What the ???
Geoff Wacker has REJECTED my edit: https://www.ifixit.com/Guide/history/ste...
I wonder why. What's the deal, Geoff? I mean I'd understand if I suggested folks didn't need the suction cups, as that could cut into iFixit's income stream, but what's wrong with suggesting that a few steps aren't needed? It worked for me; the EMC 2389 I fixed is humming along with a new 3TB HD I installed while skipping those steps.
Matthew Elvey -
I did not have to remove a single cable! After undoing the torx screws from the sides, I was able to rotate the LCD out of the way enough to reach all the screws holding in the ODD bracket. One of them was a bit challenging to get to, but I never felt that I was risking the cables by leaving them connected. Also, it wasn't totally clear, but you have to actually remove the ODD itself from the ODD bracket - 4 torx screws. The SDD mounts into the hard drive enclosure, then the enclosure is screwed into the bracket. Those holes (enclosure <-> Bracket) did not line up correctly for me, and I had to go with only three of them connected in the end. Seems to work fine.
cdansmith1 - 返信
Another comment on DATA & LCD Temp. Sensor cables: I had to remove the vertical sync, and the backlight cable, however, if you have an assistant or/can carefully rotate the screen clockwise/and then have it held up about 5" to 6" at a slight angle, you do not need to remove LCD data cable or LCD thermal cable, however - IMPORTANT: you must have a second pair of hands/or way to securely prop up the LCD. Also, don't rotate too much, since then you will pull out LCD data cable, and it renders the whole exercise moot, or can damage the cable or connector.
MaximBorzov - 返信
You don't need suction cups. The screen, held by magnets, can simply be pried off using a very thin blade such as a screw driver and fingers.
Deepsurvival - 返信
That's a bad idea. using a metal tool to pry off glass is likely to end with an expensive broken front glass.
Suction cups are common. Find a couple and do it the safe way. I use some cheap ones that came with iPhone repair kit.
max damage -
Hello, I just need to replace a slightly cracked screen on my iMac. Where is it best to place the suction cups? Thanks in advance
michelemiller0 - 返信
No need for suction cups, I just stuck my nails (short like guys usually have) between the top part of the screen and body, and it came off easily. I've never done it before, so it seems to be very easy.
Nikolas Lintulaakso - 返信
Nails worked for me too
Rob Dale - 返信
Just completed the replacement of the optical drive with an SSD using an OWC Data Doubler kit. Attempted to remove the optical drive without disconnecting any cables but found it a bit fiddly to orient the screen for good access. I bit the bullet and disconnected them and found the process less daunting than I imagined. Reconnecting them was similarly straightforward if you're careful.
Tip: you can skip the step for removing the optical drive thermal sensor connector from the motherboard. Still need to remove the sensor from the optical drive but you can leave that hanging and reattach it to the SSD later.
osienna - 返信
I have an odd question -- I want to remove the polarizer from the LCD. With some monitors this is trivial, others not so much. My question is whether it is bonded to the Liquid crystal, or whether it's loose, or cutting it with a razor blade would remove it. Obviously I'd like to know before I go to the trouble of dismantling the thing... Thanks. Paul
Paul Kwiat - 返信
I use Garmin GPS suction cup. Work very well
jc3Dcx - 返信
I’ve just successfully installed a 1TB SSD in place of my optical drive thanks to the information here- thank you to everyone who has contributed!
3 comments- the procedure described here seems to vary between HD replacement and dual HD/optical drive replacement. This can be confusing at times.
Expect there to be minor differences between the layout described and what you find when you open up your iMac. There are also, surprisingly, differences between the HD enclosure description, and the article provided by ifixit.
I was able to replace the DVD/HD enclosure single-handedly without fully removing the LCD, or deconnecting any of the cables (steps 5-11). It’s a bit cramped, and fiddly, but I was not happy removing any of the cables despite watching videos, etc., since they all seemed to involve applying more force than I was comfortable with. A more detailed description of how to release them might have helped, but even here, there may be minor variations even within the 2389 model.
Good luck!
ivan birks - 返信